Let’s take a look at inherently fire resistant fabrics. Before we get started, it’s important to note that no fabric is actually fireproof; given enough time, they will burn. That being said, there are some fabrics out there that resist fire more than others. For example, we all know that cotton burns easily and rapidly. However, fabrics like wool and Kevlar resist flames inherently because of the structure of the fiber. A tightly woven wool fabric will take longer to burn than cotton or linen.